If you are going to be messing with voltages, especially on graphics cards, you need to be aware that a) these cards are generally released with a locked voltage for a good reason, b) increasing with a 3rd party program WILL shorten the life of your product and c) it will void any potential refund options / warranty / RMA
a) all cards are released with locked voltage you need MSI AB or another to unlock it - cards also openly advertise their over-volting ability;
b) no it won't - this is a common misunderstanding - any reduction is likely to be unnoticeable anyway due to having upgraded 8 years ago before any reduction in life comes into play (if it even does which I doubt if voltages are within OK ranges);
c) no it won't - there's no way for them to tell and see point a regarding advertising;

